Engine



Sept..l 16, 1924. v

'AJ L. POWELL ENGINE Original Filed Dec. 10 1 919 snr .,rricn.

anw/AH L. POWELL, or tartas Grrr, Monsalve, Assrenon, BY Mnslvnassronivrnnrs y' To A. L.y rownLLQ rovina contrarre, rncoaronafrnn, .a oonronnrronor noni yrane.

j ENGINE'.

Application led December y10, 1919,y Serial No. 343,953. Renewed.FebruarylllwlSZ/L.

To all whom t may concern.:

1 Be it known that I, ALvAH L. POwnLL,'a citizen of the United rStates, residingat Miles City, county of Custer, vState of Montana, have invented a. 'certain new and use ful Improvement in Engines, of which the following is a full, clear, and'exacndescription, such as will enable others skilled in the art to which itappertains to make and use the same, reference being had to the accompanying drawings, formingpart of :this specification.

*e This invention pertains to certain new and useful improvements relating to internal combustion engines, and deals particularly with that type lillustrated in my copending application Serial No3-13,954; filed of even ydate herewith. Y

The principal object of the present invention resides in the .preservation ofza storage chamber arranged above .the head ofthe cylinder into which apreconno-ressed charge of air is delivered and stored prior to its admission at the proper moment into the.. combustion. chamber.: of the engine. f

The type of engineI illustrated in the attached drawings operates substantially along these same principles as thoseemployed in mycopending application 343,954 only differing therefrom in the employment of the storage chamber` andthe discharging position of the compressed gas within the hollow piston head. In former case 'the charge. was deliveredv to the combustion `chamber' while the parts were in firing position whereas, in the present case this charge is delivered to the storage chamber whilethe piston audits componentparts are at their lowermost point of travel. f

In the attached drawings I have: illustrated the preferred embodiment of my in,- vention but certain changes or variations therefrom.- may be4 resorted to without sacrificing any of the principles involved therein, and I wish it therefore understood that. the scope of protection contemplated in the present case should only be limited by the construction set forth in the claims.

In the drawings Fig. l illustrates a transverse sectional view of the engine with the parts in position at an extreme downward or working stroke, Fig. 2 is a fragmentary view in section of the head of the cylinder showing the type of valve employed in the present case. Fig. 3 is al top plan of the cylinder. showing kthe peculiar shape; ofthe storage chamber to permit vthefby-pass of the outlet passage, Fig. l `is a detailed view ofthe crank shaft showing series of stepped tailedviewillustrating)theexhaust cam and portions arranged therein. l? ig. 5 is ade F ig. 6 is ay `detailed view of the inlet cam. y Referring more 1an detail to. the Adrawings wherein similar letters of reference indicate corresponding parts throughout,kr the several views numeral l indicatestheengine, cylinder and at its upper end with an outletpase sage 10. This'outlet passage fl() communicates withastorage chamben :1.1 which may be cast integrally? with Jthe head ofthe cylin.- y

der. l Itwilllbe noticedfroin, the showing of Fig. 2that thewinlet passage 5 isnarranged withinjthis storagechamber 11. j As:v in a copending caselwithin `the, cylinder l `isfarrange-d areciprocating hollow `piston head l2 within c Awhich `is mounted a reciprocating piston head li2y-withiniwhich ismounted a recipnocating'piston 13. Bothv of these ele.- ments actuate infthesame manner as that describedA in my lformer .case, that.,k is toisay,

both the .hollow'piston head 12 and the piston 13 reciprocate inthe same general ldirection at the vsaine time .butr at relatively different,speeds;4 Inthe prese'ntcasel provide the ypiston headil with a@ Check valvee 14 kvwhich l, permitsv the gaseous ,chargefy y.within ithe lower portion within the cylinder l tofbe drawn intothel hollow piston head during the up stroke thereof. This charge is precompressed during the down stroke and when the parts arrive at trie position illustrated in Fig. l', this charge is delivered into the storage chamber l2. In order to control the inlet of the precompressed gaseous f charge from the storage chamber to the combustion chamber of the engine I provide a rotatable valve 15 which ismomentarily opened through the action of suitable levers llO operated upon by the cam 16 arranged on the crank shaft of the engine. The exhaust valve designated 16 is actuated, through suitable connected links, by the cam 17 likewise Secured to the engine shaft. The actuating surface of the cam 17 is of sutlicient area to hold the exhaust valve 16 in its opened position during a complete upstroke of the engine. Some of the principles embodied in this application are suggested in my copending application 142,664.

A complete operation of the engine is as follows: Assuming the parts to be in the position illustrated in Fig. 1 the preconjipressed 1. y charge between the upper. wall of the hollow piston head and the piston 13 has been delivered through the longitudinal passage into the storage chamber 12. The upward motion of the pis'ton members will cause a second charge to be drawn into the increased space that will present itself during the up- .Stroke and at the limit thereof will be checked between the piston head 13 and the upper wall of the hollow piston 12. This f charge will be compressed during the down stroke of saidv parts. When the piston is at its upper limit of travel the inlet valve is momentarily opened to permit a charge from the storage chamber to pass into the combustion chamber. After the closure of the inletv valve 15 this charge is exploded thereby forcing the piston in a downward direction.

What I claim is:

1. In an engine of the class described comprising a power cylinder having an Vopening through the side wall thereof, a reciprocating hollow piston within the cylinder having a passage through the side 'wall thereof, a member arranged for movement within the hollow piston and adapted opening through the side wall thereof, a

2.1n an engine of the class described' `comprising a power cylinder having an reciprocating hollow Apiston within the cylinder having a passage through the side wall thereof, a reciprocating member within the hollow piston and adapted to precompress a charge therein and deliver th'e'same through the passage in the piston and the opening in the cylinder at the limit of the outstroke of the piston, a storage chamber, a conduit for leading the' precompressed vcharge from the cylinder to the storage chamber and a communication from the storage chamber to the head of the cylinder.

3. In an engine of the class described comprising a power cylinder having an opening through the side wall thereof, a reciprocating hollow piston within the cylinder having a passage through the side wall thereof, a member arranged for move-- ment within the hollow piston and adapted to precompress a charge therein and deliver the same through the passage. in the piston and the opening in the cylinder at thev limit of the outstroke of the piston, a storage chamber, a conduit for leading the precompressed charge from the cylinder to the storage chamber, a communication from the storage chamber to the head of the cylinder and means for moving the hollow piston and the said member at different rates of movement.

. 41. In an engine of the class described comprising a power cylinder having an opening through the side wall thereof, a reciprocating hollow piston within the cylinder having a passage through the side wall thereof, a member arranged for movement the same through the passage in the piston and the opening in the cylinder at the limit of the outstroke of the piston, a storage chamber, a conduit for leading the precompressed charge from the cylinder to the storage chamber, a communication from the storage chamber to the head of the cylinder and means for moving the hollow piston and the said member at different rates of move ment in the same direction.

In testimony whereof I hereunto aiX my signature, this 10th day of December, 1919.

ALvAH L. Pow-ELL. 

